Process of preparing absorptive wadding.



NITED TATES ATENT PROCESS OF PREPARING ABSORPTIVE WADDlNG SPECIFICATION forming part of Letters Patent No. 712,81 8, dated November fl, 1952.

Application filed May 5 1902. Serial No. 106,078. (No Specimens.)

T0 to whom it may concern:

Be it known that I, HEINRICH LINNEKOGEL, a citizen of the Empire of Germany, residing in Stuttgart, Empire of Germany, have in-- vented certain new and useful Improvements in Absorptive Vaddiug and Processes of Hakingthe Same, of which the following is a specification.

Various attempts have been made to neutralize the poisonous substances which are contained in tobacco and to prevent the deleterious influence of the same, when smoking cigars or cigarettes, on the health of the smoker. These attempts were intended to absorb the poisonous substances either partly or entirely and to retain them by filtration.

It is well known that these substances were formed by the heating of the tobacco and conducted either in liquid form or with the smoke into the mouth of the smoker. The liquid consists of nicotianin and its bases, (methylpyridin bases,) pyridin O li N, pioolin, also called odorin, O H N, lutidin G H N, dimethylpyridin, collidin O I-I N, tr'imethylpyridin. The ordinary plugs made from vegetable fibers, whether carbonated or uncarbonated, were not "satisfactory, partly for the reason that they are quickly charged and then become ineffective and partly because they possess from the very beginning only a smalldegree of absorptability; The best absorptionplug heretofore known was made from the ramie fiber, but even its effectiveness is intended to be improved by the process hereinafter to be described. Besides this fiber, however, wool, cotton, linen, hemp, moss, and

other fiberscan be used; and the invention consists of a process of preparing vegetable fibers for absorptive wadding by saturating the fibers with an emulsion of water, male'ic acid, and pure Vaseline, wringing out the fibers, nextEtreating them with a weak soluthem tion of a silver cyanid, again wringing out, drying them, and forming them into wadding by felting.

The invention consists, further, of the'absorptive wedding and the absorptive plugs made from the same.

For making the improved absorptive wadding the fibers are first submerged for an hour or longer in an emulsion of one thousand grams of water, one hundred .gyams of innleic acid, and five grams of chemically+pure vaseline, obtained by mixing the Vaseline with the heated solution of water and maleic acid. Theyare then wrung ontand again submerged in a weak aqueous solution of a silvercyanid, and then after being again carefully wrung out they are dried. The so prepared and dried fibers are then felted into a wadding of suitable thickness, and from this wadding are punched by suitable dies plugsof various sizes according tothe size of the cigars or cigarettes with which they are to be used. These plugs are wrapped into the tips of the cigars or inserted into the tip ends of the cigarettes in such a manner that the smoke is drawn through them in its passage from the tips to the mouth; During the passsage of the smoke through the plug the deleterious substances contained therein-such as nicotin vapors, nicotiauin, &c.-are absorbed and rendered insoluble by combining with the silver cyanid incorporated in the plug. Plugs prepared, as described have the further advantage that they absorb the brownish, poisonous, and bitter-tasting empyreumatic oil contained in tobacco and prevent it from being taken up by the saliva and conducted into the body.

Cigars and cigarettes which are made up with absorptive plugs formed. from wadding prepared as described can be smoked without the least inj cry to the health of the smoker and are rendered soinnocuous that even convalescent patients can be permitted the en joyment of a smoke.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The process herein described of preparing absorptive waddin g from animal or vegetable fibers, which consists in saturating the 3. An absorbent plug composed ofa fibrous fibers with an emulsion of Water, mnleie acid Weddingfimpregnated with a silver eyanid and Vaseline, wringing" them our, saturating snbf'smntiallyas described.

them again with a weak solution of a silver In testimony that I claim the foregoing as cyanid, again wringing them out, then dry my invention I have signed mynztme in pres I5 ing them, and lastly felting the fibers into enee of two subscribing witnesses. wedding, substantially as set forth.

2. Absorbent Wedding composed of animal or Vegetable fibers impregnated with a. silver 10 eye-aid, substantially as described.

HEINRICH LINNEKOGEL. 1V1 tn eases:

IVIAX ULRICH, ERNST ENTERNNARD. 

